Global Patent Index - EP 4075716 A1

EP 4075716 A1 20221019 - METHOD AND APPARATUS FOR ENCRYPTING AND DECRYPTING AND READING AND WRITING MESSAGES, COMPUTER DEVICE, AND STORAGE MEDIUM

Title (en)

METHOD AND APPARATUS FOR ENCRYPTING AND DECRYPTING AND READING AND WRITING MESSAGES, COMPUTER DEVICE, AND STORAGE MEDIUM

Title (de)

VERFAHREN UND VORRICHTUNG ZUR VERSCHLÜSSELUNG UND ENTSCHLÜSSELUNG UND ZUM LESEN UND SCHREIBEN VON NACHRICHTEN, COMPUTERVORRICHTUNG UND SPEICHERMEDIUM

Title (fr)

PROCÉDÉ ET APPAREIL DE CHIFFREMENT, DE DÉCHIFFREMENT, DE LECTURE ET D'ÉCRITURE DE MESSAGES, DISPOSITIF INFORMATIQUE ET SUPPORT D'ENREGISTREMENT

Publication

EP 4075716 A1 20221019 (EN)

Application

EP 20899533 A 20201013

Priority

  • CN 201911250793 A 20191209
  • CN 2020120578 W 20201013

Abstract (en)

Disclosed in the present application are a method and an apparatus for encrypting and decrypting and reading and writing messages, a computer device, and a storage medium. The method for encrypting messages includes: generating a seed; on the basis of the seed, generating a mask; using the mask to add a mask to an original message to generate a masked message; performing white box encryption on the masked message to acquire a target message; and publishing the target message and the seed.

IPC 8 full level

H04L 9/00 (2022.01); H04L 9/06 (2006.01)

CPC (source: CN EP US)

H04L 9/002 (2013.01 - CN EP US); H04L 9/0637 (2013.01 - CN EP); H04L 9/0643 (2013.01 - US); H04L 9/0869 (2013.01 - US); H04L 2209/16 (2013.01 - CN EP US)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 4075716 A1 20221019; EP 4075716 A4 20230125; CN 111010266 A 20200414; CN 111010266 B 20230407; US 2023027142 A1 20230126; WO 2021114850 A1 20210617

DOCDB simple family (application)

EP 20899533 A 20201013; CN 201911250793 A 20191209; CN 2020120578 W 20201013; US 202017782939 A 20201013